.form-signin-root {
  position: relative;
  display: -ms-flexbox;
  display: flex;
  -ms-flex-align: center;
  align-items: center;
  height: 100vh;
  background-color: #f5f5f5;
  overflow:hidden
}

 .form-signin {
  width: 100%;
  max-width: 330px;
  margin: auto;

}

.form-signin .t-img{
  width: 80px;
  height: 80px;
  left : calc( ( 100vw - 80px ) / 2 )
}
.form-signin-root .form-signin .checkbox {
  font-weight: 400;
}
.form-signin .form-control {
  position: relative;
  box-sizing: border-box;
  height: auto;
  padding: 10px;
  font-size: 16px;
}
.form-signin .form-control:focus {
  z-index: 0;
}
.form-signin input[type="text"] {
  margin-bottom: -1px;
  border-bottom-right-radius: 0;
  border-bottom-left-radius: 0;
}
.form-signin input[type="password"] {
  margin-bottom: 10px;
  border-top-left-radius: 0;
  border-top-right-radius: 0;
}



/* ====================form-register======================= */
.form-register-root{
  display: none;
  position: absolute;
  width: 50vw;
  height: 100vh;
  left: 50%;
  background:snow;
  border :1px,solid,red
  
}